On the basis of thin-lens focal length measurement experiment, the imaging law of refraction-reflection system was further studied.
在薄透镜焦距测定实验的基础上，进一步讨论了折射反射系统成像的规律。
This paper proposes an experimental method to measure the focal length of a thin lens by using a resistance thread according to electricity principle.
本文提供了一种用电学原理在一根电阻丝上测量薄透镜焦距的实验方法。
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